Walkie Talkie, Transceiver, Two-Way Radio. This product is the first and only Snorkelling Communication Unit available it is an exclusive Patented technology by OCEAN REEF. Rechargeable Battery via USB. Rated IP68. These practical transceivers make communication possible while snorkelling. Four different channels are used in pairs for direct one on one communications or for group narration by snorkelling tour leaders. Long-life battery for continuous use assured for several hours. - Range 150m (500ft) any direction (doesn't work underwater); - Complies with different countries rules (FSR for USA, PMR446 for EU); - 4 different channel for separate conversations; - Any number of Snorkie Talkie can communicate with each other on the same channel; - Rated IP68 (waterproof 3m/10ft); - Battery level indication; - 8hrs operating time; - 1200hrs stand by battery life; - Adjustable volume; Also compatible with other standard radios.